A second class action lawsuit has been filed against Sony in Canada over the PlayStation Network downtime and breach of customers' personal information.

The lawsuit claims damages in excess of $1 billion, which includes having Sony pay the costs of credit monitoring services and fraud insurance coverage for two years.

Announced by Toronto law firm McPhadden Samac Tuovi LLP on behalf of a 21 year old plaintiff Natasha Maksimovic, it names Sony Japan, Sony USA, Sony Canada and "other Sony entities" as defendants.

Mississauga resident Maksimovic said: "If you can't trust a huge multi-national corporation like Sony to protect your private information, who can you trust? It appears to me that Sony focuses more on protecting its games than its PlayStation users."

Last week, one American PSN user filed a lawsuit against Sony over the data breach, alleging that the firm wasn't taking "reasonable care to protect, encrypt, and secure the private and sensitive data of its users".